<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 添加与搜索区 -->
      <el-row :gutter="20">
        <!-- 搜索商品区 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加商品区 -->
        <el-col :span="4">
          <el-button type="primary" @click="addGoods">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品列表区 -->
      <el-table :data="goodslist" stripe border>

        <!-- 索引列 -->
        <el-table-column type="index" label="序号"></el-table-column>
        <!-- 商品名称列 -->
        <el-table-column prop="goods_name" label="商品名称">
        </el-table-column>
        <!-- 商品价格列 -->
        <el-table-column prop="goods_price" label="商品价格(元)" width="95px">
        </el-table-column>
        <!-- 商品重量列 -->
        <el-table-column prop="goods_weight" label="商品重量" width="70px">
        </el-table-column>
        <!-- 创建时间列 -->
        <el-table-column label="创建时间" width="140px">
          <template v-slot="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <!-- 操作列 -->
        <el-table-column label="操作" width="130px">
          <template v-slot="scope">
            <!-- {{scope.row.goods_price}} -->
            <!-- 编辑商品按钮 -->
            <el-tooltip effect="dark" content="编辑商品" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            </el-tooltip>
            <!-- 删除商品按钮 -->
            <el-tooltip effect="dark" content="删除商品" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodsById(scope.row.goods_id)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>

      </el-table>

      <!-- 页码区 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20,25]" :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper" :total="total" background>
      </el-pagination>

    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 获取商品列表的请求参数
      queryInfo: {
        // 查询参数(搜索框)
        query: '',
        // 当前页
        pagenum: 1,
        // 每页显示条数
        pagesize: 10
      },
      // 商品列表数组
      goodslist: [],
      // 总数据条数
      total: 0
    }
  },

  created () {
    this.getGoodsList()
  },

  methods: {
    // 获取商品列表函数
    async getGoodsList () {
      // 发起请求
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表失败！')
      this.$message.success('获取商品列表成功！')
      // console.log(res.data)
      this.goodslist = res.data.goods
      // console.log(this.goodslist)
      this.total = res.data.total
      // console.log(this.total)
    },
    // pagesize变化时的处理函数
    handleSizeChange (newSize) {
      // 先将新的pagesize保存到请求参数中
      this.queryInfo.pagesize = newSize
      // 重新获取商品列表
      this.getGoodsList()
    },
    // 当前页变化时的处理函数
    handleCurrentChange (newPageNum) {
      // 先将最新的当前页页码保存到请求参数中
      this.queryInfo.pagenum = newPageNum
      // 重新获取商品列表
      this.getGoodsList()
    },
    // 删除(商品)按钮的处理函数
    async removeGoodsById (id) {
      // console.log(id)
      // 弹窗询问
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
      // 确认删除,发起请求
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败')
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    // 添加商品按钮处理函数
    addGoods () {
      this.$router.push('/goods/add')
    }
  }

}
</script>

<style lang="less" scoped>
</style>
